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公开(公告)号:US20090132518A1
公开(公告)日:2009-05-21
申请号:US11986593
申请日:2007-11-21
CPC分类号: G06F17/30339 , G06F17/30486
摘要: An automated method to align column values to proper byte boundaries for rapid scanning in a parallel processing database system. A table definition is received having a logical order of fields. The fields are re-ordered to create a physical order of fields. The physical order of fields has fixed length fields having a same byte alignment requirement positioned adjacent to each other in descending order from largest size to smallest size, and wherein a first fixed length field in the physical order is aligned on a proper byte boundary. Other embodiments, aspects and features are also disclosed.
摘要翻译: 一种自动化方法,用于将列值对齐到适当的字节边界,以便在并行处理数据库系统中进行快速扫描。 接收到具有字段的逻辑顺序的表定义。 这些字段被重新排序以创建字段的物理顺序。 场的物理顺序具有固定长度字段,其具有相对于彼此相邻的字节对齐要求,从最大尺寸到最小尺寸的降序,并且其中物理顺序上的第一固定长度字段在适当的字节边界上对齐。 还公开了其它实施例,方面和特征。
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公开(公告)号:US08140961B2
公开(公告)日:2012-03-20
申请号:US11986593
申请日:2007-11-21
CPC分类号: G06F17/30339 , G06F17/30486
摘要: An automated method to align column values to proper byte boundaries for rapid scanning in a parallel processing database system. A table definition is received having a logical order of fields. The fields are re-ordered to create a physical order of fields. The physical order of fields has fixed length fields having a same byte alignment requirement positioned adjacent to each other in descending order from largest size to smallest size, and wherein a first fixed length field in the physical order is aligned on a proper byte boundary. Other embodiments, aspects and features are also disclosed.
摘要翻译: 一种自动化方法,用于将列值对齐到适当的字节边界,以便在并行处理数据库系统中进行快速扫描。 接收到具有字段的逻辑顺序的表定义。 这些字段被重新排序以创建字段的物理顺序。 场的物理顺序具有固定长度字段,其具有相对于彼此相邻的相同字节对齐要求,从最大尺寸到最小尺寸的降序,并且其中物理顺序上的第一固定长度字段在适当的字节边界上对齐。 还公开了其它实施例,方面和特征。
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